Malicious PDF — malware analysis report

Static analysis result for SHA-256 556cd090c318a980…

MALICIOUS

PDF

47.9 KB Created: 2020-08-11 08:07:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1b02f2d3707e15979afd5a635bab54d6 SHA-1: 69467af2e9a07c90d34895609fea2d5c8dc253eb SHA-256: 556cd090c318a980e9bafb991cb5003bff279e60f30d931cb03f526c8bae2f75
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains numerous links, including one to a known malicious redirector at `https://ttraff.com/pify?keyword=fur+elise+notes+pdf`. The document body, though heavily obfuscated, also contains this URL, suggesting the primary intent is to redirect the user to malicious infrastructure. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm SEO tactic to improve search engine ranking for the malicious redirector. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=fur+elise+notes+pdf
    • http://files.burchfieldhomestead.com/uploads/1/3/1/4/131406075/7225474.pdf
    • http://files.migueljuliobeauty.com/uploads/1/3/2/8/132815008/kowosag-dosokoli.pdf
    • http://files.henrikbechseeberg.com/uploads/1/3/1/6/131606984/1892897.pdf
    • https://cdn.shopify.com/s/files/1/0430/8477/5577/files/2074949614.pdf
    • https://cdn.shopify.com/s/files/1/0440/3943/8486/files/asterix_en_italia_descargar_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0438/7959/6187/files/30329402204.pdf
    • https://cdn.shopify.com/s/files/1/0428/8774/1599/files/ncees_fe_reference_handbook.pdf
    • https://cdn.shopify.com/s/files/1/0432/7132/3804/files/support_vector_machine.pdf
    • https://cdn.shopify.com/s/files/1/0428/7689/5398/files/bodixunibivekizemezaxoro.pdf
    • https://cdn.shopify.com/s/files/1/0429/8542/2997/files/teduxodewujul.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/denikiv.pdf
    • https://cdn.shopify.com/s/files/1/0432/9344/2208/files/55787259218.pdf
    • https://cdn.shopify.com/s/files/1/0434/3876/8294/files/xafirosuxebukopesozopen.pdf
    • https://cdn.shopify.com/s/files/1/0430/3188/8021/files/gejudeduwajat.pdf
    • https://cdn.shopify.com/s/files/1/0432/1991/0811/files/12412424785.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000686c.bin
b107649fa434b629943d8809331a85d38cf58f5b4c7aef2fe7777b6d4e5495fa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x686C 4780 bytes
font_01_sfnt_off000078c3.bin
d167ed0900eafcfcb0a0c0c8a44cbeae0acd212a90fcac889951ddd51bbda041		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78C3 10728 bytes
font_02_sfnt_off00009da9.bin
184efd0e138a9418359f6897f9ac56b5cd93cafbd57abf30711ac2aee7e18832		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9DA9 16120 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.